With the idea of finding some boot roms, for some NIC’s that lack them, Ive been raiding a box of old computer equipment. As I didn’t have that much time I grabbed every chip that was in a socket, below is what I found!
| TYPE | Manufacturer | Model | Qty | Notes |
|---|---|---|---|---|
| eprom | ISSI | is27hc01045 | 2 | 128K (1 megabit) |
| eprom | STMicroelectronics | m27c256b | 3 | 256K (2 megabit) |
| eprom | National Semiconductor | nmc27c256q25 | 1 | 256K (2 megabit) |
| eprom | Macronix International | 27c256-15 | 2 | 256K (2 megabit) |
| eprom | Advanced Micro Devices | am27c512-150dc | 1 | 512K (4 megabit) |
| eprom | STMicroelectronics | m27c512-15f1 | 1 | 512K (4 megabit) |
| eprom | NXP Semiconductors | 27c256-20fa | 1 | 256K (2 megabit) |
| FM OPERATOR TYPE L 2 | Yamaha | ym3812 | 1 | – |
| Single-chip Floppy Disk Controller | UMC Corporation | um8388 | 1 | – |
| Programmable Peripheral Interface | NEC | upd8255ac-2 | 1 | – |
| Many-Time Programmable Flash | Silicon Storage Technology, Inc | sst27sf512-70-3c-pg | 1 | 512K (4 megabit) |
| CMOS EPROM | NXP Semiconductors | 27c256-20n | 2 | Notes |
| Static RAM | GoldStar | gm76c88-10 | 1 | 8,192 X 8 BIT |
| CMOS FLASH | Winbond | w29ee011-15 | 1 | 128K (1 megabit) |
| EEPROM | Winbond | w27c512-70 | 1 | 64K (512 bit) |
| EEPROM | Winbond | w27e257-12 | 1 | 32K (256 bits) |
| CMOS STATIC RAM | Winbond | w2465-70ll | 1 | 8K X 8 |
| CMOS Flash Memory | ATMEL Corporation | at49f010-70pc | 2 | 128K (1 megabit) |
| CMOS Flash Memory | ATMEL Corporation | at49f020-90pc | 3 | 256K (2 megabit) |
| Graphics Color Palette | ETC | tr9c1710-50pc | 1 | – |
| Quad 2-Input NOR Gate | Motorola | sn74ls02n | 1 | – |
| 8-Input POSITIVE-NAND Gates | Texas Instruments | sn74ls30n | 1 | – |
| Quadruple 2-Input POSITIVE-NAND Gates | Texas Instruments | sn74ls00n | 1 | – |
| Quadruple 2-Input XOR Gates | Texas Instruments | sn74ls86an | 2 | – |
| Manchester Encoder-Decoder | Seeq | DQ8023A | 1 | IEEE 802.3,Ethernet Rev 1, TxC cycle 100ns |
| CMOS DRAM | Hynix Semiconductor | hy534256as | 8 | 256k x 4 bit – 70ns |
| CMOS DRAM | Samsung | km44c256b-7 | 4 | 256 x 4 bit – 70ns |
| Clock Generator – Dual Frequency Generater | Avasem | AV9194-46CN20 | 1 | – |
I have eight chips (Ok, so three are the same) which I can find no information on, any help appreciated!
[1st] (Qty: 3) 20 pin DIP Chip reads: AAA1M304P-08 NMBS 9146
[2nd] (Qty: 1) 20 pin DIP Chip reads: OTI068 850167-243 OAK TECHNOLOGY INC A9202 501A
[3rd] (Qty: 1) 28 pin DIP Chip reads: 9205 OTI066ADV-66 OAK TECH.
[4th] (Qty: 1) 28 pin DIP Chip reads: UMC UM70C188 9446A N20474
[5th] (Qty: 1) 28 pin DIP Chip reads (I know this one is a samsung) : KDA0476CN-66 KOREA 219
[5th] (Qty: 1) 28 pin DIP Chip reads: Winbond W27F256-12 94401
I also got a stack of other eeproms, but the are all OPT (One time program) so they are useless to me. Im not binning then though, I have a project in mind. Well, 2. But an extreme voltage overload is only funny whilst you have 2 eyes.
So, if you have any datasheets that match the chips in the table above or you have any info (the data sheet would be amazing) for the chips listed as unknown, please send them to me!